tag:blogger.com,1999:blog-5088860151651047897.post699630494309118129..comments2024-03-25T10:56:59.380-04:00Comments on Jacobs Physics: More on the light bulb that doesn't obey Ohm's lawGreg Jacobshttp://www.blogger.com/profile/03854009948036330746noreply@blogger.comBlogger2125tag:blogger.com,1999:blog-5088860151651047897.post-66950627876217243702016-07-18T19:16:42.851-04:002016-07-18T19:16:42.851-04:00You could make a simple voltage divider with 10 eq...You could make a simple voltage divider with 10 equal resistors ... they should be available in tight tolerances from like a Radio Shack ... and then you have your 2V in 0.2V increments. Or you can use however many you want, like 20 will give you 0.1V increments. you just stack them in series between the + terminal and gnd. And then take it off wherever you want. That'd be a pretty simple way to do it. And if you used, say, 10% tolerance resistors (as opposed to 5%), you'd also have the opportunity to have a good discussion about experimental error. It's just another avenue to that "ways to improve the reliability" discussion we're always trying to encourage.Anonymoushttps://www.blogger.com/profile/17086589576385374773noreply@blogger.comtag:blogger.com,1999:blog-5088860151651047897.post-58074589562959399132016-07-06T12:40:24.415-04:002016-07-06T12:40:24.415-04:00I am also fond of recording voltage and current st...I am also fond of recording voltage and current starting from 0v up to some reasonable level, and then keep recording as you step the voltage down.<br /><br />The graph can be interesting.Jimhttps://www.blogger.com/profile/16821987112206071203noreply@blogger.com